A5010866579- Essential Oils and Antimicrobial Activity
- Natural Antidiabetic Agents Studies
- Piperaceae Chemical and Biological Studies
- Insect Pest Control Strategies
- Traditional and Medicinal Uses of Annonaceae
- Phytochemistry Medicinal Plant Applications
- Phytochemicals and Antioxidant Activities
- Phytochemistry and Biological Activities
- Natural product bioactivities and synthesis
- Phytochemistry and biological activity of medicinal plants
- Allelopathy and phytotoxic interactions
- Research on Leishmaniasis Studies
- Ethnobotanical and Medicinal Plants Studies
- Electrochemical sensors and biosensors
- Advanced Glycation End Products research
- Liver Disease and Transplantation
- Plant and animal studies
- Liver Disease Diagnosis and Treatment
- Consumer Retail Behavior Studies
- Phytochemical compounds biological activities
- Banana Cultivation and Research
- Advanced Chemical Sensor Technologies
- Agricultural and Food Sciences
- Medicinal Plant Extracts Effects
- Tannin, Tannase and Anticancer Activities
Universidade Federal de Uberlândia
2016-2025
Universidade do Estado de Santa Catarina
2015
University of Kentucky
2013
Universidade de São Paulo
1980-2010
Universidade Federal de Viçosa
2006
Universidad de Oviedo
1996
This work reports the use of Moringa oleifera oil and leaves as potential sources for production biodiesel antioxidant additives biodiesels, respectively. The M. methyl ester was prepared by a two-step reaction exhibited physical–chemical properties that met minimum or maximum limits EN 14214, emphasizing high induction period (IP) 19.3 h. Ethanolic extracts were evaluated to increase IP value biodiesels. results indicate 98% (v/v) ethanolic extract increased values soybean from 3.8 10.3 h...
Abstract Antimicrobial drug resistance is a challenge to public health. Various microorganisms, including methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa, carbapenemase-producing Klebsiella pneumoniae, Pythium insidiosum, and Candida auris, have developed commonly used antimicrobials in infection disease treatments. Consequently, there an urgent need explore develop novel therapeutic drugs. Natural products, particularly medicinal plants, received attention the...
This work proposes the application of batch-injection analysis with amperometric detection to determine antioxidant capacity real samples based on measurement DPPH radical consumption. The efficient concentration or EC50 value corresponds sample standard required scavenge 50% radicals. For accurate determination EC50, were incubated for 1 h because many polyphenolic compounds typically found in plants and responsible activity exhibit slow kinetics. BIA system using a glassy-carbon electrode...
Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal microorganisms and cytotoxic properties. EOs Kielmeyera coriacea Mart. & Zucc. were analyzed by gas chromatography coupled to mass spectrometry (GC-MS). The EO from leaves is rich in sesquiterpenes hydrocarbons oxygenated sesquiterpenes. three major compounds identified germacrene-D (24.2%), (E)-caryophyllene (15.5%), bicyclogermacrene (11.6%). inner bark composed mainly the...
Abstract Studies based on medicinal plants have stood out as a complementary treatment intervention to type 2 Diabetes mellitus and its complications. Among the Brazilian plants, we highlight Cordiera sessilis (Vell.) Kuntze, in turn, has been studied several chemical biological studies due ethnopharmacological indications. Thus, this study aimed evaluate antimicrobial, antioxidant, antiglycation, digestive enzyme inhibition effects of fractions obtained from ethanolic extract stem bark C....
Leishmaniasis and Chagas are diseases caused by parasitic protozoans that affect the poorest population in World, causing a high mortality morbidity. As result of highly toxic long-term treatments, discovery novel, safe more efficacious drugs is essential. In this work, vitro antiparasitic activity mammalian cytotoxicity three natural tirucallane triterpenoids, isolated from leaves Schinus terebinthifolius (Anacardiaceae), nine semi-synthetic derivatives were investigated against Leishmania...
The seasonal chemical composition of essential oils from Inga laurina was determined by GC/MS. In the stem bark’s oil extracted during dry season, presence terpenoids (30.05%) stood out, and phytol (9.76%) major compound identified. For bark obtained rainy in addition to (26.63%), a large amount fatty acids (46.84%) were identified, particular palmitic acid (25.40%). Regarding leaves’ esters (42.35%) main components. ester present (Z)-hex-3-enyl benzoate (10.15%) this (Z)-hex-3-en-1-ol...
Leishmaniasis and Chagas disease are parasitic protozoan infections that affect the poorest population in world, causing high mortality morbidity. As a result of highly toxic long-duration treatments, novel, safe more efficacious drugs essential. In this work, methanol (MeOH) extract from leaves Piper malacophyllum (Piperaceae) was fractioned to afford one alkenylphenol, which characterized as 4-[(3'E)-decenyl]phenol (gibbilimbol B) by spectroscopic methods. Anti-protozoan vitro assays...
The chemical composition of the essential oils from leaves, bark and wood Cassia bakeriana Craib. was determined by gas chromatography (GC) chromatography–mass spectrometry (GC-MS). Alcohols, aldehydes fatty acids were major components in leaf oil, while oil rich acids. Terpenes such as linalool, (E)-nerolidol phytol present low concentrations. antimicrobial activity against aerobic anaerobic oral bacteria evaluated using microdilution method, cell viability test carried out with Vero cells....
The antimicrobial potential of extracts bark and leaves Cassia bakeriana Craib, Fabaceae, against aerobic anaerobic oral bacteria was evaluated by the microdilution broth method. For crude ethanol organic fractions tested, dichloromethane phase showed a significant antibacterial effect, with MIC values ranging from 12.5 to 100 μg/ml for most microorganisms tested. Thus, bioassay-guided fractionation this fraction performed. This led isolation 1,8-dihydroxy-anthraquinone-3-carboxylic acid,...
Most electrochemical sensors reported for catechin determination in herbal medicines actually involve the detection of not only catechins but also other flavonoids. This work proposes a strategy to selectively detect and quantify flavan-3-ol, known as catechins, presence flavonoids by complexation with AlCl 3 . Flavonoids (e.g., rutin, quercetin) form stable complex which affect electrooxidation these molecules. Hence, oxidation is free from interference shown differential-pulse voltammetry...
Abstract Six nostoclide analogues were synthesised from 3‐benzyl‐2( 5H )‐furanone in one step, with yields ranging 10 to 71%, and subjected several biological assays. The two most active of these, 5d 5e, shown be phytogrowth inhibitors the radicle Lolium multiflorum Lam, while enhancing root growth Physalis ixocarpa Brot. Both compounds inhibited electron flow (basal, phosphorylating uncoupled) water methylviologen (MV); both acted as Hill reaction inhibitors, since synthesis ATP was...
The antifungal leaves extract from Piper scutifolium was submitted to bioactivity-guided chromatographic separation against Cladosporium cladosporioides and C. sphaerospermum yielding piperine, piperlonguminine corcovadine as the active principles which displayed a detection limit of 1 µg. Structure-activity relationships were investigated with preparation twelve analogs having differences in number unsaturations, aromatic ring substituents amide moiety. Analogs single double-bond no...
Abstract BACKGROUND Eugenia calycina is an endemic species in the Brazilian savannah (the Cerrado) and it threatened with extinction. Several of are used as insecticides or insect repellents. No data available on larvicidal activity E. . The chemical composition essential oil (EO) from leaves was analyzed by gas chromatography coupled to mass spectrometry (GC–MS) against Aedes aegypti larvae third stage development studied. RESULTS Oxygenated non‐oxygenated sesquiterpenes were identified,...